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2020-08-13 BOMBARDIER, INC.: Amendment 39-19905; Docket No. FAA-2020-0092; Product Identifier 2020-NM-001-AD.
(a) EFFECTIVE DATE

    This AD is effective June 10, 2020.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD  applies  to  Bombardier, Inc. airplanes, certificated in any
    category, as specified in paragraphs (c)(1) through (4) of this AD.

(1) Model  CL-600-2B19 (Regional Jet Series 100 & 440)  airplanes,  serial
    numbers (S/Ns) 7003 through 7990 inclusive,  and  S/Ns 8000 and subse-
    quent.

(2) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes, S/Ns
    10002 through 10347 inclusive.

(3) Model CL-600-2D15 (Regional Jet Series 705) airplanes and Model CL-600
    -2D24 (Regional Jet Series 900)  airplanes,  S/Ns  15001 through 15469
    inclusive.

(4) Model CL-600-2C11 (Regional Jet Series 550) airplanes, all serial num-
    bers.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 27, Flight controls.

(e) REASON

    This AD was prompted by reports of fractured rudder primary feel  unit
    shafts; a  subsequent investigation  determined that  the fractures in
    the shafts are consistent with fatigue damage. The FAA is issuing this
    AD to address fractures of  the rudder primary feel unit  shaft, which
    could result in a loss of feel in the yaw axis and thereby impact  the
    controllability of the airplane.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) REPLACEMENT

    Within the compliance times specified  in figure (1)  to paragraph (g)
    of this AD: Replace all rudder primary feel unit shafts that have part
    number (P/N) 600-90251-1  with a new shaft,  in  accordance  with  the
    Accomplishment Instructions of the Bombardier Service Bulletin 601R-27
    -166, dated April 5, 2019 or Bombardier Service Bulletin 670BA-27-075,
    dated April 5, 2019 as applicable. For Model CL-600-2C11 (Regional Jet
    Series 550)  airplanes,  do  the  replacement  in accordance  with the
    Accomplishment Instructions  of Bombardier  Service Bulletin 670BA-27-
    075, dated April 5, 2019.

                 FIGURE 1 TO PARAGRAPH (G)  COMPLIANCE TIMES             
    ______________________________________________________________________
    ACCUMULATED AIRPLANE FLIGHT             COMPLIANCE TIME FOR THE
              CYCLES                              REPLACEMENT
    ______________________________________________________________________
    For airplanes that have             Before the airplane reaches 30,000
    accumulated 22,000 total            total flight cycles.
    flight cycles or less as of
    the effective date of this AD.

    For airplanes that have             Within 8,000 flight cycles from
    accumulated more than 22,000        the effective date of this AD.
    total flight cycles, but less
    than 37,000 total flight cycles,
    as of the effective date of this
    AD.

    For airplanes that have             Before the airplane reaches 45,000
    accumulated 37,000 total flight     total flight cycles.
    cycles or more, but less than
    40,000 total flight cycles, as of
    the effective date of this AD.

    For airplanes that have             Within 5,000 flight cycles from
    accumulated 40,000 total flight     the effective date of this AD.
    cycles or more, but less than
    46,500 total flight cycles, as of
    the effective date of this AD.

    For airplanes that have             Before the airplane reaches 51,500
    accumulated 46,500 total flight     total flight cycles.
    cycles or more as of the effective
    date of this AD.
    ______________________________________________________________________

(h) PARTS INSTALLATION PROHIBITION

    As of the effective date of this AD,  no  person  may install a rudder
    primary feel unit shaft, P/N 600-90251-1, on any airplane.

(i) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager,  New York ACO
    Branch,  FAA,  has  the authority  to approve  AMOCs for  this AD,  if
    requested using the  procedures found in  14 CFR 39.19.  In accordance
    with 14 CFR  39.19, send your  request to your  principal inspector or
    local Flight  Standards District  Office, as  appropriate. If  sending
    information directly to the manager of the certification office,  send
    it to ATTN: Program  Manager, Continuing Operational Safety,  FAA, New
    York ACO Branch, 1600 Stewart  Avenue, Suite 410, Westbury, NY  11590;
    telephone 516-228-7300;  fax 516-794-5531.  Before using  any approved
    AMOC,  notify  your  appropriate  principal  inspector,  or  lacking a
    principal  inspector,  the  manager  of  the  local  flight  standards
    district office/certificate holding district office.

(2) Contacting the Manufacturer:  For any requirement in this AD to obtain
    instructions   from   a  manufacturer,   the   instructions  must   be
    accomplished using  a method  approved by  the Manager,  New York  ACO
    Branch, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier,
    Inc.'s TCCA  Design Approval  Organization (DAO).  If approved  by the
    DAO, the approval must include the DAO-authorized signature.

(j) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian AD CF-2019-42,  dated November 8, 2019,  for related informa-
    tion.  This MCAI may be found  in  the  AD  docket  on the internet at
    https://www.regulations.gov by searching for  and  locating Docket No.
    FAA-2020-0092.

(2) For more information about this AD,  contact Andrea Jimenez, Aerospace
    Engineer,  Airframe and Mechanical Systems Section,  FAA, New York ACO
    Branch,  1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone
    516-228-7330; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

(k) MATERIAL INCORPORATED BY REFERENCE

(1) The Director of the Federal Register  approved  the  incorporation  by
    reference (IBR) of  the service information  listed in this  paragraph
    under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use  this service information as applicable to do the actions
    required by this AD, unless this AD specifies otherwise.

(i) Bombardier Service Bulletin 601R-27-166, dated April 5, 2019.

(ii) Bombardier Service Bulletin 670BA-27-075, dated April 5, 2019.

(3) For service information identified  in  this  AD,  contact Bombardier,
    Inc.,  400 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; Wide-
    body Customer Response Center North America toll-free telephone 1-866-
    538-1247  or direct-dial  telephone 1-514-855-2999;  fax 514-855-7401;
    email ac.yul@aero.bombardier.com; internet http://www.bombardier.com.

(4) You may view  this  service  information  at  the  FAA,  Airworthiness
    Products Section, Operational Safety Branch, 2200 South 216th St., Des
    Moines, WA.  For information  on the availability  of this material at
    the FAA, call 206-231-3195.

(5) You  may  view  this  service  information  that  is  incorporated  by
    reference at the National Archives and Records Administration  (NARA).
    For information on the availability of this material  at  NARA,  email
    fedreg.legal@nara.gov,  or  go  to:  https://www.archives.gov/federal-
    register/cfr/ibr-locations.html.

Issued  on  April 20,  2020.  Gaetano A.  Sciortino,  Deputy Director  for
Strategic  Initiatives,  Compliance  &  Airworthiness  Division,  Aircraft
Certification Service.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez,  Aerospace Engineer, Air-
frame and Mechanical Systems Section,  FAA,  New  York  ACO  Branch,  1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330; fax
516-794-5531; email 9-avs-nyaco-cos@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0092; Product Identifier 2020-NM-001-AD; Amendment
39-19905; AD 2020-08-13]
RIN 2120-AA64

Airworthiness Directives
; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 &
440) airplanes, Model CL-600-2C10 (Regional Jet Series 700, 701 & 702)
airplanes, Model CL-600-2D15 (Regional Jet Series 705) airplanes, and
Model CL-600-2D24 (Regional Jet Series 900) airplanes; and all
Bombardier, Inc., Model CL-600-2C11 (Regional Jet Series 550)
airplanes. This AD was prompted by reports of fractured rudder primary
feel unit shafts; a subsequent investigation determined that the
fractures in the shafts are consistent with fatigue damage. This AD
requires replacement of the rudder primary feel unit shaft. The FAA is
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective June 10, 2020.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of June 10,
2020.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 400 Cote-Vertu Road West, Dorval,
Quebec H4S 1Y9, Canada; Widebody Customer Response Center North
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email ac.yul@aero.bombardier.com;
internet http://www.bombardier.com. You may view this service
information at the FAA, Airworthiness Products Section, Operational
Safety Branch, 2200 South 216th St., Des Moines, WA. For information on
the availability of this material at the FAA, call 206-231-3195. It is
also available on the internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2020-0092.

Examining the AD Docket

You may examine the AD docket on the internet at https://www.regulations.gov
by searching for and locating Docket No. FAA-2020-
0092; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer,
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330;
fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2019-42, dated November
8, 2019 (also referred to as the Mandatory Continuing Airworthiness
Information, or ``the MCAI''), to correct an unsafe condition for
certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 &
440) airplanes, Model CL-600-2C10 (Regional Jet Series 700, 701 & 702)
airplanes, Model CL-600-2D15 (Regional Jet Series 705) airplanes, and
Model CL-600-2D24 (Regional Jet Series 900) airplanes; and all
Bombardier, Inc., Model CL-600-2C11 (Regional Jet Series 550)
airplanes. You may examine the MCAI in the AD docket on the internet at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2020-0092.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bombardier,
Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes,
Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes, Model
CL-600-2D15 (Regional Jet Series 705) airplanes, and Model CL-600-2D24
(Regional Jet Series 900) airplanes; and all Bombardier, Inc., Model
CL-600-2C11 (Regional Jet Series 550) airplanes. The NPRM published in
the Federal Register on February 18, 2020 (85 FR 8768). The NPRM was
prompted by reports of fractured rudder primary feel unit shafts; a
subsequent investigation determined that the fractures in the shafts
are consistent with fatigue damage. The NPRM proposed to require
replacement of the rudder primary feel unit shaft. The FAA is issuing
this AD to address fractures of the rudder primary feel unit shaft,
which could result in a loss of feel in the yaw axis and thereby impact
the controllability of the airplane. See the MCAI for additional
background information.

Comments

The FAA gave the public the opportunity to participate in
developing this final rule. The FAA has considered the comments
received. The Air Line Pilots Association, International (ALPA) and
Jacob Yepiz stated support for the NPRM.

Conclusion

The FAA reviewed the relevant data, considered the comments
received, and determined that air safety and the public interest
require adopting this final rule as proposed, except for minor
editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51


Bombardier has issued Service Bulletin 601R-27-166, dated April 5,
2019; and Service Bulletin 670BA-27-075, dated April 5, 2019. This
service information describes procedures for replacing the rudder
primary feel unit shaft that has part number 600-90251-1 with a new
shaft. These documents are distinct since they apply to different
airplane models. This service information is reasonably available
because the interested parties have access to it through their normal
course of business or by the means identified in the ADDRESSES section.

Costs of Compliance

The FAA estimates that this AD affects 1,002 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:


Estimated Costs for Required Actions

Labor cost
Parts cost
Cost per product
Cost on U.S. operators
18 work-hours x $85 per hour = $1,530
$158
$1,688
$1,691,376

According to the manufacturer, some or all of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected individuals. The FAA does not control warranty coverage for
affected individuals. As a result, the FAA has included all known costs
in our cost estimate.

Authority for This Rulemaking


Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.

Regulatory Findings


This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

Adoption of the Amendment


Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES


1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):